Programmatically search a table with jQuery DataTables -

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i using jquery datatables 1.10.9 , jquery 1.8.3. i'm trying programmatically search in that, without success.

i tried:

function applyfilter(filter) {     $("#datatable").filter(filter); }

and

function applyfilter(filter) {     $("#datatable").fnfilter(filter); }

use search() api method perform search, see code below:

function applyfilter(filter) {     $('#datatable').datatable().search(filter).draw(); }

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